Dual fuel engine having multiple dedicated controllers connected by a broadband communications link
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United States of America Patent
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Feb 17, 2004
Grant Date -
Oct 2, 2003
app pub date -
Mar 20, 2002
filing date -
Mar 20, 2002
priority date (Note) -
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Abstract
A control system for a dual fuel engine that can operate in either dual fuel mode or in diesel only mode includes two controllers. One controller controls operation of the gaseous fuel supply system, and the other controls the liquid fuel supply system. Each controller receives signals from sensors monitoring particular engine operation characteristics and is able to transmit the data it collects to the other controller by way of a broadband communications link such as a controller area network (CAN). When the engine is operating in dual fuel mode, one controller directly controls the gaseous fuel supply and also controls the liquid fuel supply by its control of the other controller. When the engine is operating in diesel only mode, the other controller controls all aspects of engine operation. A method of controlling operation of a dual fuel engine is also disclosed.
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